Hi, I'm reading the linked doc. I was talking via mail with Brandon K about this issue too.
As an answer, take in account the paragraph of that doc reading this:
Don't be too hasty to remove a rule
Just because a particular rule is generating a false positive on your site does not mean that you should remove the rule entirely. Remember, these rules were created for a reason. They are intended to block a known attack. By removing this rule completely, you might expose your website to the very attack that the rule was created for. This would be the dreaded False Negative.
As per the chat with Brandon, they will double check the issue because it's happenning only on 2/12 websites. We have determined that the pings could be originated due to a awesome super new feature coming in future versions of JetPack, that started being tested some months ago.
We're on it. I'll let you know what's new right here, when I got news to share.
Best regards
